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Pregnancy

Talk about every stage of pregnancy, from early symptoms to preparing for birth.

A 5mm pregnancy sac at 6 weeks is impossible, right?

124 replies

TheBirdintheCave · 16/03/2022 09:17

Wondering if there are any sonographers on here who might be able to help me out or people who have had similar stories.

Basically, I’m supposed to be 7 weeks pregnant and had a scan at the EPU yesterday because of some brown spotting. All seemed fine with the bleeding. The sonographer couldn’t find a uterine cause for it, there was no bleeding around the pregnancy sac, my ovaries or anywhere else.

This was the only good news.

She then described what she could see. She said there was a pregnancy sac present with a yolk sac inside and ‘maybe the beginnings of an embryo’. She then mentioned that the pregnancy sac only measured 5mm.

The next piece of info I got was that I did not ovulate from the side I thought I did which blew my ovulation date out of the water (as I went by a sharp pain in my right-hand side, when apparently I ovulated from my left as that’s where the corpeus luteum is)

Based on this and the last time we had sex, I told her that I could be as early as 6 weeks and she seemed to suggest that these measurements were consistent with that date. She prescribed me some progesterone pessaries and told me to come back for another scan in two weeks.

When I got home I searched for 5mm pregnancy sac and was able to ascertain in about three clicks on Google that this was not an ok measurement for 6 weeks.

The only caveat to this is that I have a tilted uterus and know that this makes it harder to take accurate measurements even with a transvaginal scan. My son was measuring as a week behind at a seven week scan (though we saw him and his heartbeat) but had ‘caught up’ by his 12 week scan.

In my mind there are two options here. The first and most logical:

The pregnancy stopped progressing at five weeks.

Or:

I am six weeks pregnant and the measurements were just wonky. This theory does get bonus points for making sense of my scant pregnancy symptoms (My nausea has been barely there but has felt worse over the last few days. Though on a bad note, my breasts were sore but aren’t really anymore since yesterday). It would also explain why I had an extremely faint positive test at what I thought was 14dpo but could actually have been 9dpo.

She asked me to go back in two weeks for another scan which again I agreed to but now it just seems like a waste of two weeks that I could have spent getting my cycle back and preparing to try again. At 35 I really can't afford to waste a month or more. We also have male factor fertility issues so it’s highly unlikely for us to get pregnant at the best of times. This one was another miracle in our eyes.

What should I do? I don’t know whether to bother with the pessaries. Will they delay the miscarriage or will it happen regardless? I’m afraid they’re going to give me fake symptoms and I might be tricked into thinking it’s all ok. I just wanted a definitive answer but came out with a different problem altogether ☹

Why has she given me hope in an obviously hopeless situation? It just seems extremely cruel.

OP posts:
TheBirdintheCave · 18/03/2022 08:27

@Trinxsy Sorry it was twice in a row :( I really hope I can convince them to scan me earlier than two weeks. Surely one is enough to establish that it hasn't grown?

@orangehour Whilst I appreciate what you're saying, I don't actually have to do these two traumatic weeks when there is no chance of success. My life as an undiagnosed autistic person (up to age 32) has been traumatic enough, I don't need any more. I don't want to be a hostage to my own body any longer. I just want to induce the miscarriage and move on.

OP posts:
orangehour · 18/03/2022 08:42

No, you’re quite right. I’m not saying you should have to wait 2 weeks. I waited 1 week in the same situation and then had medical management. I really wish you all the best x

TheBirdintheCave · 18/03/2022 08:55

@orangehour Thank you x I'm really hoping I can talk them down to one week.

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Babyiwantabump · 19/03/2022 09:18

At our trust a diagnosis of miscarriage is made if a pregnancy sac measures 25 mm . A gestational sac with a measurement of 5mm with a yolk sac present is a normal finding . We would routinely invite women back for a rescan in 1-2 weeks to show normal growth .

Babyiwantabump · 19/03/2022 09:22

What I mean is if there was no yolk sac present that would be a more concerning finding . But there was a yolk sac . So that’s good news!

BertieBotts · 19/03/2022 09:36

Will they do hcg blood tests 48 hours apart for doubling? Can you get that privately?

GoldenOmber · 19/03/2022 09:38

@Babyiwantabump

What I mean is if there was no yolk sac present that would be a more concerning finding . But there was a yolk sac . So that’s good news!
It’s not good news if she’s 7 weeks pregnant, though, is the problem. Either she’s much less far along than she thought or those measurements are pretty bad news.

I get why EPUs want to look on the bright side and just assume you got your dates wrong, but having been in the OP’s position it was maddening to have medical staff tell me “that’s a perfectly normal finding!” when they meant “that’s perfectly normal for someone a lot less far along than you are.” I would have much preferred “there’s maybe some chance it’s ok, but there’s a bigger chance it’s not, so we’ll rescan in a week but in the meantime here’s some information about natural miscarriage and your options for medical management if you want to think about that.”

liveforsummer · 19/03/2022 10:03

I get that 2 weeks feels like a lifetime right now but in the grand scheme of things in the conception journey it's nothing. I know it's torture just now but won't it also be just never knowing for sure. If the news is a miscarriage then that will be utterly devastating but you will be sure. To go ahead and induce miscarriage now when there is indeed a chance that measurements could be wrong, especially due to the tilted uterus surely that what if, even if it's a small what if will follow you forever. If you can bring the scan forward then great, if not surely waiting is the only real option for you to not always hold that doubt?!

TheBirdintheCave · 19/03/2022 10:54

@Babyiwantabump Yes normal for five weeks but not for seven (or even six at the earliest) and it is impossible for me to be less that six weeks pregnant as we last had sex on the 10th of February.

@GoldenOmber Yes, exactly. I just wanted a more realistic response.

@liveforsummer It’s the fear of randomly miscarrying whilst I’m out somewhere too that frightens me. It’s definitely going to happen, I just want some control over it. I have to go to London for work on Thursday and am considering not going because I’m too afraid of being so far away from home.

OP posts:
brainhurts · 19/03/2022 10:56

What time is your appointment today?

brainhurts · 19/03/2022 11:03

Can you please explain your maths , you last had sex on 10 feb , by my calendar that's only 5 1/2 weeks ago , am I missing something?
They estimated around 5 weeks pregnant that would tally with when you had sex .

liveforsummer · 19/03/2022 11:19

@brainhurts

Can you please explain your maths , you last had sex on 10 feb , by my calendar that's only 5 1/2 weeks ago , am I missing something? They estimated around 5 weeks pregnant that would tally with when you had sex .
I believe the scan was on Tuesday so that's 4 weeks and 6 days from the 10th
brainhurts · 19/03/2022 11:24

@liveforsummer
Thanks for clarifying the dates. So am I right in thinking what was picked up at the scan ( 4weeks 6 days ) could well be a 5 week pregnancy ?
I just can't understand why op is so determined to terminate what could ( maybe only in my eyes ) be a viable pregnancy.

liveforsummer · 19/03/2022 11:29

I imagine it's because you normally take your dates from 2 weeks before (date of last period) but they're is a lot of variation. There is no exact science due to cycle lengths and sperm survival, it can last several days , error in measurements, variation in development. A miscarriage is of course a possibility but there's no definite at this stage surely.

TheBirdintheCave · 19/03/2022 11:39

To clarify the dates for people:

Last had sex: 10th of Feb

Sperm lives for max five days so ovulation could have taken place for me to conceive at the latest: 14th Feb (CD 21)

Standard NHS dates measure ovulation at CD14 putting me at 7+4 today. Since I ovulated a week behind their dates, the earliest I could possibly measure today is 6+4, anything less is not mathematically possible and therefore not viable.

Does that make sense?

OP posts:
TheBirdintheCave · 19/03/2022 11:46

@brainhurts It was just now. The consultant was in surgery though unfortunately so I could only speak to a midwife who had no authority to change the scan dates :(

This whole situation is severely damaging my mental health. I’m a hostage to my own body :( Pregnant but also not pregnant.

The best she could do was offer for a consultant to call me on Tuesday who might agree to scan me next Friday instead :/ Better than nothing I suppose.

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WhiteJellycat · 19/03/2022 11:50

I think this is one of the issues with early scans OP. I had a scan at 7 weeks as was sure of my dates. Fp and heartbeat but way to small to be viable and was about half the size feasible by any possible ovulation date. I knew straight away it wasnt viable.

I hope you can get scanned sooner. No consolation but I when I did eventually miscarry it wasnt horrible at all. I do hope you get good news

brainhurts · 19/03/2022 11:54

I'm sorry they were unable to answer all your questions today .
They do have to follow procedures they must be absolutely sure it's a non viable pregnancy before intervention. As frustrating as this is to you to wait it I personally couldn't spend my life thinking' what if it was viable , what if I jumped to conclusions"

Nikki037297 · 19/03/2022 12:01

Can’t you book a private scan for Monday or Tuesday? Then at least you will know then if it’s the same size and there is nothing more to be seen that you will know

TheBirdintheCave · 19/03/2022 14:27

@Nikki037297 I can’t afford it as we just spent £600 on the car :(

OP posts:
brainhurts · 22/03/2022 13:15

Have you managed to speak to the consultant?

TheBirdintheCave · 22/03/2022 16:05

Nope :( No one called and my husband is the only one in his department today so he had no time to ring them himself. Hopefully tomorrow? :(

OP posts:
brainhurts · 22/03/2022 16:24

Can you not ring ?

Caaarrrl · 22/03/2022 16:29

@TheBirdintheCave

Nope :( No one called and my husband is the only one in his department today so he had no time to ring them himself. Hopefully tomorrow? :(
Ring yourself?
TheBirdintheCave · 22/03/2022 18:07

I’m autistic and have audio processing disorder which means I can’t hear people properly without seeing their lips. Masks have been a nightmare for me. Phones have always caused anxiety.

OP posts: